U.S. President Donald Trump has approved a four-point policy plan on North Korea revolving around using "every possible pressure" while looking for a diplomatic solution, a South Korean lawmaker said Thursday.

A bipartisan group of South Korean politicians met with Joseph Yun, the U.S. special representative for North Korea policy.

Trump signed a comprehensive policy report by the State Department about two weeks ago, Yun was quoted as saying by Rep. Kim Kwan-young of the opposition People's Party.

It includes four main strategies -- not recognizing North Korea as a nuclear state, imposing every possible sanction and pressure, not seeking a regime change and resolving the problem with dialogue in the end.

It indicates that the Trump administration may have ruled out a military option for the Kim Jong-un regime, which has ratcheted up military threats with a series of ballistic missile launches and nuclear testing. (Yonhap)